Beoeptacle fob betaining ob excluding heat



CQM. FAHNESTOCK. HECEPTACLE FUR RETAINING 0R EXCLUDING HEAT.

APPLlCATION FILED DEC.2. I918.

Patented Sept 9, 191'9.'

FIG. 1.

- part of this specification:

UNITED STATES PATENT OFFICE.

CHARLES 1!. FAHNESTOCK, 0F CINCINNATI, OHIO, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, T0 GIIARLES M. FAI-INESTOCK, TRUSTEE, OF CINCINNATI, OHIO.

ILECEPTACLE FOR RETAINING OR EXCLUDING HEAT.

Specification of Letters Patent.

Application filed December 2, 1918. Serial No. 265,032.

belongs to that class of receptacles known as vacuum bottles, which are intended to retain or exclude heat, andthus retain the contents at a. higher or lower temperature than the surrounding atmosphere.

My improved receptacle is cheap of manufacture, simple in construction and highly eificient in use. It is unique and sanitary, and possesses a marked degree of utility.

My invention consists essentially in ro viding an inner and an outer bottle or siell spaced apart, the space between the shells forming a vacuum, so that the container or inner shell is vacuum insulated, thus the contents placed in the container will remain at or preserve the temperature at which they have been placed therein for a considerable time.

One of the main objects of my invention is to place a shell or partition of asbestos or other refractory material of a low degree of conductivity in the vacuum space, thus the heat will not radiate to any extent and such radiation will be cut to a minimum; thus the contents of the container or inner bottle or shell will he maintained at temperature for a maximum. period of time.

Other features of the invention and advantageous elements of construction and de tail, will become apparent from the followspecification and claims.

In the accompanying drawing, forming Figure 1, 1s a central longitudinal section of my improved receptacle, and

Fi 2, is a cross section on the line 2-2 of Flg. 1.

The outer shell or wall is marked 1 and the inner shell or wall 2; this shell 2 forms the container. Between these two shells 1' and 2, I form a vacuum space 3, and in this vacuum I place the refractory shell 4;. This refractory shell 4 may be placed at any part in the vacuum s ace, but is enerally and preferably place so that it will divide said the desired space, so that a divided vacuum space will be present at each side of the said refractory shell, thus providing a double insulation from the inside and outside of the receptacle.

At the bottom the vacuum space 3 is larger and at this bottom part the outer shell 1 and the cylindrical edge 6 of a cap piece 7, and can be properly welded together to hold the vacuum. The whole bottom part is inclosed by a retaining cap 9 which fits thereon and extends up to a oint 10 in the shell 1, and it may be held in position in any manner. At the top the shells 1 and 2 and the refractory piece 3 are bent to form a neck as shown. The top ends of shells 1 and 2 are bent down as shown at 12 to hold the top Patented Sept. 9, 1919. I

edge of the refractory piece 3 between them and are welded at 12,, to hold the vacuum.

A stopper 1% is shown in'the izo'ntainer. Around the neck part of the bottlel; attach in any suitable manner a partly screw threaded cap piece 15 and onto this screw thread piece 15 I screw the screw threaded removable top cap 16.

The refractory piece 4 is held in a desired normal position by the rings 17 which keep it evenly spaced from the shells 1 and 2 as shown. I preferably leave a series of communicating spaces 18 in the rings 17, (see Fig. 2). I

The inner container formed by wall or shell 2 may be made of any contour and out of any material, preferably thin metal and. the outer shell 1 and its connecting parts may be of metal or other material and of any desired contour. The refractory material 4: may be placed in the vacuum space 3 in any desired manner and may be of any material of this character best suited for the purpose and may be held in normal position in any desired manner.

While I have described one specific form of carrying my invention into effect, I do not desire to limit myself to such specific construction, as the same may be modified to some extent and I wish to be understood as new and m invention,

atent 1s:

1. In a receptacleof the class described,

an inner member and an outer member, spaced form a vacuum between them, and a longitudlnally disposed partltlon 1n saidspacedividing the same, said partition made of a sheet of refractory material of Wconductivity.

2. A receptacle of the class described, formed of tlir'single walls, an innerwall and an outer wall and a partition Wall between them, saidwalls vacuumvspaced from 1 each other, the partition Wall formed of a refractory material of low conductivity.

3. A receptacle of the class described, formed of three single walls, an inner wall and an outer wall and partition wall between them, said walls spaced from each other, the partition wall formed of a refractory material of low conductivity, the said three walls extending and spaced the the entire length of the receptacle, all the spaces .bctween said walls formed of a vacuum.

4. In a receptacle of the class described, an inner and an outer member, both made of thin metal and spaced apart to form a "vacuum, and a single sheet wall made of a material of low conductivity, dividing the vacuum space between the members.

, 5, In a receptacle of the class, described, an inner member and an outer member, spaced to form a vacuum heat insulating space between them, and a sheet of asbestos' surrounding the inner member, but spaced therefrom.

6. A receptacle including an inner shell,

an outer shell spaced at all points from said inner shell and separated therefrom by a vacuum space, and a partition of sheet mate- '4". A receptacle including an inner shell of thin metal adapted to receive the contents of the receptacle, an outer shell also of thin metal spaced throughout from the uated space, said partition spaced throughout from both the inner and outer shells.

In testimony whereof, I aflix my signature.

CHARLES M. FAHNESTOCK. Witnesses. I

H; E. CARsrENs, JOHN W. STREHLI.

inner shell, said inner and outer inclosing an. evacuated space, and a partitlon of asbestos arranged in and dlvldlng said evac- 

